Automatic alarm-lock.



M. SHEINMAN.

AUTOMATLC ALARM LOCK.

APPLICATION FILED JUNE l, 19N. RENEWED MAY 20. i915.

2 SHEETS-SHEET l.

\ El? 4 F291 2 m n 4' all/l coLUMmA PLANOGRANI Co..w^sr1.xNG'roN. n4 c.

Patented Dec. 14, 1915.

M. SHEINMAN.

AUTOMATIC ALARM LOCK.

APPLICATION FILED IUNE I. I9I4. RENEWED MAY 20.19l5.

Patented Deo. 14, 1915.

2 SHEETS-SHEET 2.

coLuMlA PLANDGRAPH C0., WASHINGTON. n. c.

'entren srarns PATENT orrion MORRIS SIIEINMAN, 07F NEW YORK, N. Y., ASSIGNGR, BY MESNE ASSIGNMENTS, TO GIBRALTAR ALARM LOCK CO., INC., A' CORPORATION OF NEVE YORK.

AUTOMATIC ALARM-LOCK,

Specification of Letters Patent.

Patented Dec. 14,1915.

Application led June 1, 1914, Serial No. 842,131. Renewed May 2D, 1915. Serial No. 29,451.

To all fiom t may concern.'

lie it known that I, Monnrs SrrnrNMAN, a citizen of the United States, and a resident of New York, county and State of lle .Y York, have invented certain new and useful Improvements in Automatic Alarm- L-ocks, of which the following is a full, clear, and exact description.

This invention relates more particularly to an automatic alarm such as disclosed in my Fatent No. 1,097,88l, dated May Q6, 19M, in which an alarm is sounded in case a lock is tampered with.

In the patent referred to, the construction is such that the electric connection for the alarm was made through the main lock casing. This required wiring certain parts of the door and providing a connection in such a way that 'the door could be moved on it hinges without disturbing the electric circuit. This required considerable time in th installation of a lock of this kind and utilized more wire than was necessary and in addition was likely to be otherwise objectionable because of the wiring being applied to the door.

In the present invention the principal object is to overcome the objections referred to and so to construct a lock of the general. character disclosed in my Patent No. 1,097, that the electric circuit with the alarm may be made through the keeper or other parts mounted on a fixed yor stationary part, thus avoiding the necessity of any .v'iring whatever on the door and otherwise simplifying the construction so that an effective alarm is secured in case the lock is tampered with.

Another objectof the invention is to proa simple and eicient lock in which the bolt carries a movable contact member which y is insulated from the bolt and so connected A further object of the invention is toA provide a simple and efficient automatic alarm lock in which both contacts are normally mounted upon the lock proper, and in which an alarm connection is made through the keeper and means mounted thereon which cooperates with the lock.

still further object of the invention is to provide a lock which is simple in construction and which may be readily made and assembled.

A still further object of the invention is to'provide contacts for the alarm circuit which willkeep the circuit closed by their movement together should the lock be tampered with.

With these and other objects in view, the invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this specification, and will then be pointed out in the claims at the end of the description.

lIn the drawings, Figure l is a detail rear elevation of the lock and keeper, the detachable casing member being partly brozen away to show the interior working parts of the lock. Fig. 2 is a sectional plan view taken on the line H-H of Fig. l looking in the direction of the arrow and showing one form of electric circuit including a` bell. Fig. 3 is a fragmentary perspective view showing the interior of a part ot' the lock and keeper. Fig. d isa fragmentary section ot a part of the bolt of the lock taken on the line IV-IV of Fig. 5. Fig. 5 is a transverse section taken on the line V-V of Fig. a. Fig. 6 is an elevation, partly broken away, showing a different form of contact member mounted on the lock casing, the circuit being broken. Fig. 7 is a view similar to Fig. 6 with the circuit closed and the keeper removed. Fig. 8 is a detail perspective view of the casing contact. Fig. 9 is a fragmentary section showing how the contact mounted in the bolt may bear against a Inetal lining or bushing instead of directl)- against the insulation. Fig. l0 is a transe. rse section taken on the line X-X of Fig. 9; and Fig. 11 is an elevation of the keeper, partly broken away, showing an insulated metal bushing or tliimble for the adjusting screw.

The lock has a box-like casing 11 substantially rectangular in form and a cover member l2, the said cover member being secured to the box-like member 11 by screws llQ 13 and the bon-like member being secured to the door 14 by screws or otherWise. A bolt l has an engagin.V part 16 at one end. This bolt is suitably guided in the casing member ll and has its part 16 passing tirough an opening l? in one end of the lochr casing. rlhe bolt has an enlarged slreleton part or body i7 proyidineq an opening or space 18 of irregular Jform, and said bolt is guided in the ea ing so as to be movable bach and. -forth therein. .This bolt has tWo projecting portions or lugs 19 and 20 `forining a space bett/'een them and Which are adapted to be engaged by a part 2l of a tuinbler Q9, said part 2l being normally located Vemfeen said lugs. This tumbler is pivotally held to the bolt as to move therewith and is normally forced to an engaging position by a spring 23., one end oi Which is held to the tumbler and otheiI end passed about a lug` or projection on said bolt. rlfhe tumbler has slioi'xlder adapted to enthe casing lug 520 on one side thereof and With a shoulder Which is adapted to engageone edge or side ot a lug 27 formed as a part of the casing member ll. It Will be evident that ii the tumbler is forced up- Ward on its pivotso as to remove tlie shoulder 26 out of engagement With the lug 27, the bolt may oe forced either forward or rearward as desired. rlhis releasing of the tumbler the forcing of the bolt to a locked or an unlocked position may be accomplished in any suitable Way. As one means, a rotary member 28 is provided having arms 29 and 530 Which are normally held in a horizontal position by a `flat spring 3l, one end oie. Which is secured to the casing member ll and its free end is adapted to rest against pins 3l projecting from the arms 29 and 30. rEhe rotary member 28 may be operated from the outside of the door by a key in any desired Way and from the inside by a. knob 32 or a key or both as preferred. Bv rotating the member 2S so as to cause the arm 30 to release the tumbler by engaging With the part 2l thereof, the bolt and tumbler may be moved to an un locked position. lt' the member 28 is rotated by a key or the knob 32 in the opposite direction, the arm 29 Will release the tumbler from engagement With the lug 27, thus forcing the tumbler and bolt to a locked position. During the unlocked position the cut-aWay par' ot the tumbler Will be forced to a position to engage the opposite sides of the fixed lug 27 so that the shoulder 34 by its engagement With said lug 27 Will prevent the bolt being throWn to a locked position until the tumbler is released.

Any suitable means may be employed as an alarm or signal. es shown, a bell 35 is provided having one of its terminals connected to a Wire 36 and the other terminal to a Wire 37, forming a part of an electric circuit 385 and included in this electric cir cuit is a battery 39 or other source of electric supply. 'l` he tWo terminals of the elec tric Vcircuit are connected one to the lreeper 40 and the other to an insulated bolt 41. The keeper 40 is of any desired form and has a lia-.nge portion to tit against the inner edge of the doorjamb by screws or otherwise. This keeper has an opening;V 43 for the reception of the bolt engaging end 16 when the bolt is throWn to a locked position. The bolt or screW 4L Which may be adjustable in the keeper 40, may be locked in its adjusted position by means of nuts 44, and said sci-eu' terms one 'terminal of the electric circuit so that it the circuit is completed through the bolt -fir-.nd the keeper 40, the alarm Will be sounded.

To complete the circuit through the keeper and bolt 4l, various means may be employed. As shoWn, the bolt engaging end l@ has an oval opening 45 therein in Which is adapted to move a similarly shaped end 46 of a contact me aber 47. lThis contact member 47 is insulated from the bolt and fromthe lock member by means oit a liber or other bushing 4S Which extends throughout the entire length of the engaging part 16 of the bolt. A further provision for in sulating the contact member 47 from the bolt is a fiber or other Washer 49 Which insulates the pin 50 and prevents the same from coming into Contact With the member 47 and yet serves to assist in guiding the contact member on the bolt. rEhe contact member 47 is slotted, at Fl, to spa-n the insulating Washer 49 and to permit the same to more relatively to the bolt lengths/'isc thereof and said member 47 is normally lorced inward toward the screW 4l by a spring 52, one end of Which engages a part of the member 47, the other end ci said spring engaging the insulating Washer 49. The inner end of the contact member 47 is in the form of a rectangular bar or shank 53 and is provided With a hooked end 54 Which is adapted in a certain position and When ringing the alarm to engage the bent end 55 of ay flexible Wire contact 56. rllhis contact 56 is secured at one end to the casing cover l2 and its free end is located adjacent to the hoohedv end 54 of the contact member 47. During the locking and unlocking of the bolt, the member 47 moves With said bolt. lf'during the lockingposition the contact member 47 could be moved far enough inward to cause the hooked end 54 to engage the contact 55, the alarm Would be sounded, but it is the intention of the invention that the bolt may be moved by a. key in the usual Way to throw the bolt to a locked or unlocked position Without ringing the alarm, and should the lock be tampered With, as by an attempt to spread the door from the jamb, in such case the alarm. Will be sounded. This is accomplished by the coperation of the contact member 47 with the adjustable screw or contact bolt 41 of the keeper. When the bolt is forced to a locked position, it will carry the contact member 47 and the outer end of the contact member will engage the head of the screw 41, thus forcing the member 47 against the tension of the spring 42 and holding the hooked end out of contact with the end 55 of the contact 56. If now a tool should be used to force the door by spreading the lock from the keeper, the spring 52 will force the contact member 47 to remain in contact with the screw 41 and until the hooked end 54 engages the end of the contact 5G which will sound the alarm. The alarm will continue to sound so long as the spreading of the lock from the keeper takes place and the contact is made between the end 54 of the contact member 47 and the contact end he contact 56 is in electrical connection with the casing 11 and the keeper and bolt are also in the electric circuit, so that the circuit when completed will be from the battery through the keeper, bolt, casing, contact 55, contact member 47, screw 41, bell to the battery.

In Figs. 6 to 11 the construction is substantially' the same as that already described except as to the form of the contact mounted upon the casing of the lock, the means for insulating the movable Contact device mounted on the bolt, and the insulated bushing for the screw or bolt 41 forming one terminal of the alarm or signal circuit. The movable contact device 47 is the same as already described, and instead of having a sliding movement directly against the insulation, a metal thimble or bushing 57 is provided. This bushing 57, Figs. 9 and 10, is insulated from the locking end of the bolt 15 by the liber 58 or otherwise, the said metal bushing 57 serving to form a better wearing surface for the end of the contact device 47 than might be obtained by having the insulation itself forni the wearing surface. The inner hooked end 54 of the contact device 47 is adapted to engage the inwardly extending end of a movable contact 60. This Contact 60 is of a plate-like form and is pivoted at 61 to the casing member 12 in substantially the same position as the wire contact 56 and may be used in place of said contact 56. This contact 6() is normally forced in one direction by a spring 62, one end of which is held to the contact 60 and its other end passes about a pin or stud 63 carried by the casing member 12, the said contact 60 being limited in its movement in one direction by a shoulder or otherwise on said casing memberl 12. The purpose of pivoting the contact 50 is to give a greater range of movement than might be obtained by the wire contact 56 `even when the latter is flexible. This construction per mits the contact end 54 on the contact device 47 to remain in engagement with the end 59 of the contact 60 for a considerabie travel of said contact device 47 so that if the lock is tampered with, as in an effort to spread the lock from the keeper, even when'such spreading is for a considerable distance, the alarm will be sounded or other signal made according to what is included in the electric circuit. The contacts G0 and 47 are so arranged and constructed that during the normal throw of the bolt by a key or by the knob 32 the screw 41 will cause the contact end 54 to be disengaged from the end 59 of the contact G0 as already explained and as shown in Fig. 6. Any spreading of the lock from the keeper will cause a relative movement of the Contact 47 with the bolt 15, which willy bring the end 54 into engagement with the end 59 of the contact 60. This will complete the circuit and cause the alarm to sound. As the spreading continues the contact 60 will move on its pivot against the tension of the spring (32 as shown in Fig. 7, and this condition will continue so long as the door remains spread from the keeper. It will thus be evident that it will be difiicult to tamper with the lock without sounding the alarm and that by providing the movable contact G0, the circuit may be caused to remain closed for a` considerable travel or movement of the device 47.

In Fig. 11, the keeper shown is substantially the same as that already described and differs only in providing a threaded metal bushing or thimble 64 for the engagement with the threaded end of the terminal. screw 41. This provides a better engagement for the screw 41 and still provides means for insulating said screw from the keeper, the said. metal thimble or bushing 64 being insulated from the keeper by a fiber or other socket 65.

From the foregoing it will be evident that simple and eliicient means is provided whereby all wiring on the door for the electric circuit may be entirely dispensed with; that simple means is provided for insulating the contact device of the bolt; that simple means is provided whereby a better contact is provided between the contact device mounted on the bolt and the casing contact; and that said means as well as other parts of the lock are simple in construction and may be readily made and assembled.

Having thus described my invention, l claim as new and desire to secure by Letters Patent:-

1. Tn a lock, the combination of a casing, a bolt movable in said casing. a keeper, an adjustable member held in said keeper and insulated therefrom and arranged in the path of the bolt, a Contact device bodily mov able with the bolt and insulated therefrom and also movable lengthwise of the bolt and ise- CIK

Il (l adapted to engage the member in the keeper to force said device lengthwise of the bolt, a contact adapted to engage a part of the device in the absence of the member' in the keeper, an electric alarm circuit including the keeper and the Contact, and means for moving the bolt.

Q. ln a lock, the combination of a casing, a bolt movable in said easing, a keeper, a screw held in said keeper and insulated therefrom and arranged inthe path of the bolt, a contact device carried by and insulated therefrom and bodily movable with the bolt and also movable lengthwise of 'the bolt and adapted to engage the screw in the keeper to force said contact device lengthwise of the bolt, a contact adapted to engage a part of the device in the absence of the member in the keeper, an electric alarm circuit including the keeper, the contact device and the contact, and means for moving` the bolt.

3. in a lock, the combination of a. casing, a bolt having an engaging part provided with an opening therethrough, an insulating bushing arranged in said opening, a keeper, a screw adiustably held in said keeper, means for moving the bolt, an alarm, an electric circuit including the alarm, a movable contact included in said circuit, a contact device having a body portion movable in the insulating bushing in the engaging part of the bolt so as to be insulated from said bolt, said contact being provided with an extended part having` a finger adapted to engage the wire contact, and said contact device being` adapted to move with the bolt and to be engaged by the screw to move the contact device relative to the bolt in one direction, a transverse insulated guide in said bolt, and a spring interposed between the guide and the end of the contact device tending normally to force the device in the opposite direction to close the circuit.

il. ln a lock, the combination of a casing, a bolt having` an engaging part provided with an oval opening therethrough, an insulating bushing arranged in said opening, a keeper, a screw adjustably held in Said keeper and insulated therefrom, means for moving the bolt, an alarm, an electric circuit including the. alarm, a contact included in said circuit, a contact device lnving an oval body portion movable in the insulating bushing in the enging part of the bolt and provided with means adapted to engage the first-mentioned contact, said contact device bc'ng adapted to more with the bolt and to be engaged by the screw to move the contact device relative to the bolt in one direction, and means for forcing the d vice in the opposite direction to close the circuit.

5. lin a lock, the combination of a easing, a bolt having` an engaging part, a member arranged in the path of the bolt, means for moving the bolt, a signal circuit, a contact in said circuit, a contact device also included in the circuit and slidingly held on the bolt and insulated therefrom and provided with an extended part having a iinger adapted 'to engage the wire Contact, said contact device being adapted to move with the bolt and to be engaged by the member to move the con.- tact device relative to tl e bolt in one direction, and a spring tending normally to force the device in the opposite direction.

6. in a lock, the combination of a casing, a keeper, ascrew in said keeper, a bolt having an engaging part provided w'th an opening therethrough, means for moving the bolt, an alarm, an electric circuit including the alarm, a contact included in said circuit, a contact device having a body pon tion movable in the opening` in the engaging part of the bolt and insulated therefrom and provided with an extended part having a linger' adapted to engage the wire contact, said contact device being adapted to move with the bolt and to be engaged by the screw to move the contact device relative to the bolt in one direction, and a spring tending normally to force the device in the opposite direction to close the circuit, said circuit being connected to the keeper and to the screw.

7. In a lock, the combination of a casing, a bolt having` an engaging part provided with an opening therethrough, a keeper, a screw adjustably held in said keeper, means for moving the bolt, an alarm, an electric circuit including the alarm, a contact included in said circuit, and insulated means arranged in the opening in the engaging part and adapted to engage tue screw and be forced thereby into engagement with the contact to complete the circuit.

8. In a lock, the combination of a casing, a bolt movable in said casing, a member arranged in the path of the bolt, a keeper adapted to be engaged b v said bolt, a contact device bodily movable with the bolt and insulated therefrom and adapted to engage the member to force said contact device lengthwise of the bolt, a contact adapted to engage a part of the device, and signaling means controlled by said device.

9. In a lock, the combination of a casing, a bolt movable in said casing, a keeper, an adjustable member held in said keeper and insulated therefrom and arranged in the path of the bolt, a contact device bodily movable with the bolt and insulated therefrom and also movable lengthwise of the bolt and adapted to engage the member in the keeper to force said device lengthwise of the bolt, a pivotally held contact adapted to engage a part of the device in the al sence of the member in the keeper, an electric alarm circuit including the keeper and the contact, and means for moving the bolt.

l0. in a lock, the combination of a casn ing, a bolt movable in said casing, a keeper, a screvv held in said keeper and insulate-d 'therefrom and arranged in the path of the bolt, a contact device carried b y and insuated therefrom and bodily movable With the bolt and also movable lengthwise of the bolt and adapted to engage the screw in the keeper to force said contact device length- Wise or the bolt, a movable second contact adapted to engage a part of the device in the absence of the member in the keeper, an electric alarm circuit including the keeper, the contact device and the contact, and nie-ans for moving the bolt.

ll. ln a lock, the combination of a casing, a bolt having an engaging part provided With an opening therethrough, a keeper, a member held in said keeper, means for moving the bolt, an alarm, an electric circuit including the alarm, a contact included in said circuit, means arranged in the opening in the engaging part of the bolt and adapted to engage said member and be forced thereby into engagement With the contact to complete the circuit, and an insulating metal bushing arranged in the bolt opening and forming a bearing for said means.

12. In a lock, the combination of a casing, a bolt movable in said casing, a screw arranged in the path of the bolt, a keeper adapted to be engaged by said bolt, a contact device bodily movable with the bolt and insulated therefrom and adapted to engage the screw to force said contact device length- Wise othe bolt, a contact adapted to engage a part of the device, signaling means controlled by said device, and an insulated and threaded bushing forming a support for the screw.

This specification signed and witnessed this 28th day of May, A. D. 1914.

MORRIS SHEINMAN.

Titnesses LESTER C. TAYLOR, C. BARTEL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

